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<p>Reports legacy string formatting expressions (via "format", "formatted" or string concatenation) that
  can be converted to interpolated strings.</p>
<p>The new syntax is more concise, offers more static checking and provides a better runtime performance.</p>

<p><b>Example:</b></p>
<pre><code>
  val str = "test"
  "test %s".format(str)
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  val str = "test"
  s"test $str"
</code></pre>
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